Automatic fire extinguisher



July 27 1926..

M. G. NORMAN UTOMATI C FIRE EXTINGUI SHER INVENTOR Filed Jan. 28, 1925 Wa BYA l Al IORNEY W// '///f//f/ Patented July 27, 1926.

PATENT l OFFICE.

MATHEW GREEN" NORMAN, OF WEWOKA, OKLAHOMA.

AUTOMATIC FIRE EXTINGUIASHER.

.Application filed January 28, 1925. Serial No. 5,306.

My invention relates to an automatic fire' extinguisher and its principal object .is to provide a sprinkler which is operated to permit a supply of waterto enter a rotating spray head upon heating of a room to a predetermined degree.

A further object of the invention is to provide an automatic fire extinguisher which includes a rotary spray normally rendered inactive by a weighted valve normally closed through the instrumentality of a string or other element adapted to be burned upon contact of the same with fire or the room being heated to a predetermined temperature.

With the preceding and other objects and advantages in mind, the invention consists in the novel combination of elements, construction and arrangement of parts and operation to be hereinafter specifically referred to, illustrated in the accompanying drawings, and pointed out in the appended claim.

In the drawings Figure 1 is an elevation of the device supported in the` ceiling of a building, the

dotted. line position indicating the positionv of the parts when operated.

Figure 2 is a View taken on line 2-2 of Figure 1.

Figure 3 is a sectional view taken on line 3 3 of Figure 2.

Figure 4 is a detail view showing the relative position of/the valve.

. Referring to the drawings in detail, wherein corresponding characters of reference denote corresponding parts throughout the several views, the numeral 5 designates a vertically arranged pipe passing through the ceiling or other part of a building designated at 6. This pipe 5 is adapted to be connected with any suitable source of water supply not shown.

The lower end of the pipe is closed by a plug 7 while slots 8 areprovided vin the pipe in close proximity to the plug 7.

Revolubly mounted upon this end of the pipe 5 and resting upon the outer edges of the plug 7 is a rotatable sleeve 10 carry- ,ing a plurality of radially disposed longitudinally curved spray tubes 11 into which water from the pipe 5 is adapted to iiow and rotate the sleeve before finally discharging from the ends of these tubes.

Arranged within the pipe 5 at a point above the fioor 6 is a rotatable valve 12 to the outer end of which an arm 13, is connected, the latter carrying a weight 14 upon its outer end. A collar 15 is connected with this p1pe 5 and includes a lateral extension 16. A cord 17 is connected with the inner end of the arm and with th'e extension 16 to hold the arm in an elevated position Where the valve will be disposed in closed' position. In lieu of the cord 17 a fusible element may be employed which will fuse at a predetermined point to permit the weighted arm to fall and open the valve to permit water to passthrough the pipe and into the various tubesvcarried by the revolving sleeve 10.

Assuming the parts to be in position shown in full lines in Figure 1, the cord 17 upon being burned permits the Weighted arm to fall to the dotted line position and subsequently open the valve. Water passing through the pipe 5 discharges through the slots 8 and passes through the longiv tudinally curved tubes on the rotatable sleeve causing the latter to rotate and at the same time discharge the water within the radius of acircle.

While I have shown and described the preferred embodiment of the invention, I de sire to have it understood that such changes may be made in the form, construction and arrangement of elements and operations, as will not depart from the spirit of the invention or the scope of the subjoined claim.

What is claimed is A fire extinguisher of the character described comprising a water conducting pipe Vextended through a ceiling of a building, a

plug threadedly secured in the lower end thereof which is disposed below the ceiling, a rotary spraying means on and in communication with the lower end of the pipe' and bearing against the plug, a valve in the water conducting pipe and being disposed above the ceiling, and arm fixed ad- ]acent one end o f said valve, a collar surrounding the pipe in close proximity to the sleeve and below the ceiling, a weight `-secured to the remote end of the arm, a fusible cord having its respective ends secured to the collar and the end of the 1 arm opposite the Weight, said cord passing 5 through an opening formed in the ceiling and normally holding the arm and its weight in a raised position with the valve closed,

and fsaid cord adapted to be burned whereby to release the arm and open the valve to admit water to the spraying means for rotating the latter. y

In testimony whereof I aix my signature.

MATHEW GREEN NORMAN. 

